QCD Parity violation in a quarkonium via SUSY

TL;DR

This paper investigates bounds on mass differences between left- and right-handed squarks in the supersymmetric standard model by analyzing QCD parity violation effects in quarkonium and nucleon-meson scattering data.

Contribution

It provides new bounds on squark mass non-degeneracy based on experimental data, linking SUSY parity violation to observable phenomena.

Findings

Bound on charm squark mass non-degeneracy from charmonium decay

Estimated bounds for up and down squarks from nucleon-meson scattering

Commented on bounds for other squark types

Abstract

Supersymmetric standard model has a parity violation in QCD through chiral quark-squark-gluino interactions with non-degenerate masses between left-handed and right-handed squarks. Since experiments have not show any parity violations in QCD yet, a bound for the mass degeneracy between left-handed and right-handed squarks should exist. In this paper we try to obtain this bound for each squark. At first, we investigate a non-degeneracy bound between $m_{\tilde{c}_L}$ and $m_{\tilde{c}_R}$ from experimental data of charmonium decay. Next, we estimate the non-degeneracy bounds for $\tilde{u}$ and $\tilde{d}$ from nucleon-meson scattering data, and comment on other squarks.